| Acronym | Meaning |
 | HIRISE | High Resolution Imaging Science Experiment |
| INLA | Irish National Liberation Army |
| ICS | In-Country Support - Intelligence And Communications Systems - Interim Contractor Support |
| HKS | HyperKinetic Syndrome |
| PEI | Prince Edward Island - PolyEtherImide |
| ABIN | Ag?ncia Brasileira De Intelig?ncia (Brazilian Intelligence Agency) |
| LLTR | Low-Level Transit Route |
| IA | Interlingua Language (ISO 639-1 Code) |
| CMM | Capability Maturity Model |
| SMASS | Small Main-Belt Asteroid Spectroscopic Survey |
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